Improvement in wood-bending machines



UNITED STATES PATENT OFFICE.

OwEN EvANs, OE ALLIANCE, OHIO.

Specification forming part ot' Letters Patent No. 55,264, dated Juno 5,1866.

To all whom it may concern:

Be it-known that I, O. EVANS, of Alliance, in the county of Stark andState ot' Ohio, have invented certain new and usefulImprovements in aWoodBending Machine; and I do hereby declare that the following is afull and complete description of the construction and operation ofthesame, reference being had to the accompanying drawings, making a partot' this specification, in which- Figure l is a plan View of themachine. Fig. 2 is a side elevation. Fig. 3 isy an end view.

Like letters of reference refer to like parts in the several views.

A is a base-board or platform of the machine, from one end oi' whichextends up a standard, A, that is notched or cut out at the top, so thatthe en d ot a form, B, comes against and rests upon it, as shown in Fig.2. One side of the post extends up, as at a,Fig1, that one side of theform is placed against. The other end of the form B lits onto and restsupon a projection, D, secured to a standard, D', extending up from theside ofthe base A. The upper part of the standard D is inclined to oneside, as shown in the figures, and from one side at the top projects alug, g, that a screw, 7L, passes through, in the upper end of which is ahan d-lever, Z, by which the screw is turned at the lower end upon thecenter of a head, E.,

In the inclined portion of the standard there is a groove or guide, e,in which a projection from the head E lits and moves. There is ametallic band, e', attached to the sides of the head and extendingaround the standard, which holds it in place as it is moved up and down.The lower part of the head at the sides is dovetailed out, as at c, andts into the upper part of a formingblock, F, which is cut out to receiveit, as represented in Fig. 2.

I is a metallic clasp ot' a rectangular form, that tits at the upper endinto a groove cut out in the block F, and extends around the form B,holding the form and block together with the timber between, as will bedescribed.

L is a hand-lever, curved or rounding at the lower end, as representedin Fig. 2, that rests and turns on the baseboard A. The lever isconnected to a slotted guide, P, whereby it is held in place by pins onone side passing through slots c in the guide, with heads f on the outerend. The slots are curved to correspond with the movement ot' the lever,which as it is raised and lowered turns on the board A, changing itsi'ulcrum at every point, and describes a section of a circle, wherebythe same leverage is obtained at every point or position ofthe lever. Tothe lower end ofthe lever is pivoted an arm, p, that is formed into alip, j, at the upper end. Apin, c', projecting from one side ot' thearm, passes through a slot in an arm,f, pivoted to the standard D. Onthe front part of the form B, and attached to it at m, is a plate, m',at the outer end of which is a catch, J.

a is a plate secured at one end to the block F, and extends back overthe form B, at the outer end ot' which there is acam, R, that consistsof a circular head, a', from which ahandlever, l, projects, that passesthrough a slot in a ring, a, around the head. The upper part of the ringis formed into a restv or support, d, and to the head, one side of thecenter, is secured a bent rod, g', thatis turned at right angles, whichis placed on the end otl the plate n, and the rest d comes underneaththe timber when it is put in the form, which, by raising the lever,tightens and holds the plate down on the timber.

The manner in which timber is bent in this .machine, constructed asdescribed, is as follows: They timber J, after being stcamed, is firstplaced with the block F upon the form B, and the plate n laid down O11top, theclasp I being put over the end of the form. The plate n is heldin place along on the timber by the cam R, hung on the rear end, asbefore dedescribed. The forming-block F and form B,

with the timber J thus arranged, are then put in the machine. The rearend ofthe form B is placed on the standard A, and the front end rests onthe piece D, the block F being slipped into place in relation to thehead E. The screw h is then turned, which moves the'head down, causingthe forming-block F to press the timber close against the form B, when akey, d', is inserted in the lower end of the clasp, as seen in Fig. 2,for holding it in that position when removed from the machine. The frontend ot' the timber comes against the catch J on the end of the plate m,as represented, and this is raised for bending the timber up against theblock F by depressing the handle of the lever L, when the catch J,resting on the lip with the timber, will be moved up into the positionindicated by the dotted lines in Fig. 2, bending the timber closeagainst the formingblock F. A' key, J, of a suitable size, is theninserted underneath the plate between it and the form B, which willretain it in that position when the pressure from the lever is removed.By means of a staple, h', one end being inserted in a hole in the formand the other end extending over the plate n, the plate will be held inplace on the timber, when the cam R can be taken off. The timber isnowbent on. the form and forming-block and secured in that position,when the forms with the timber are taken from the machine.

The same operation is repeated in bending other pieces of timber.

The form B and forming-block E may be of any form or configuration forbending timber into the desired shape.

Wha-t I claim as my improvement, and desire to secure by Letters Patent,is-

1. The arrangement of the staple h', form B, and plate n, in combinationwith the head E, block F, clasp I, and key d', as and for the purposesubstantially as set forth.

2. The construction of the lever L, guide P, and arm p, in combinationwith the catch J and head E, as and for the purpose substantially asdescribed.

OWEN EVANS.

Witnesses W. H. BURRIDGE, A. W. MGGLELLAN.

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